Effects of different mulching measures on the morphology of bamboo shoots in Phyllostachys violascens forests
[Objective]To explore the effects of different forest cover measures on bamboo shoot morphology in Phyllostachys violascens forests,and provide reference for determining efficient cover measures to promote the growth of bamboo shoots in terms of heightening and thickening.[Method]Two heat-generating substances(dead cake and wheat ash)and three hull cover thicknesses(15,25 and 35 cm)were selected to cover P.violascens forests.Soil temperatures and thunder lengths and diameters were measured at different periods and soil depths,and then their differences were compared by two-way ANOVA to analyze the correlation between them and soil temperatures.[Result]The soil temperatures of the bamboo shoots covered with dry cake,wheat ash and different thicknesses of chaffwere all above 10℃.The soil temperatures showed an increasing trend in the first 4 weeks,then gradually decreased from the 5th week,and reached a minimum in the 13th week(the end of February of the following year),after which the soil temperatures began to rise again with the increase of air temperature.When the same heat-generating material was covered,the higher the thickness of chaffcover,the higher the soil temperature.Different thicknesses of husk cover had a significant effect on the increase in length of thunder bamboo.As the thickness of husk cover increased,bamboo shoots became taller and the highest length(33.79 cm)was observed when the husk cover was 35 cm.Different heat generating substances had a significant effect on the increase in length.When using wheat ash as a heating substance,the more favorable it was for bamboo to increase in height.There was no significant effect of heat generating substance and thickness of husk cover on the thickening of thunder length.There was a significant positive correlation between length and temperature,with a correlation coefficient of 0.943;there was no significant correlation between diameter and temperature.There was a significant positive correlation between length and temperature,and there was no significant correlation between thickness and temperature.[Conclusion]During the mulching period of P.violascens forests,different mulching measures had different effects on bamboo shoot morphology.The mulching pattern of using wheat ash as the heat generating material and the thickness of the grain chafflayer of 35cm could effectively realize the growth of bamboo shoots with increased height and improve the yield and benefit of bamboo shoot forests.
Phyllostachys violascens forestsmulching measuresbamboo shoot lengthbamboo shoot diametersoil temperature
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